Just slip it on to the end of your cue and you have seven height options. It also includes a nylon case 4 1/2″ x 2 1/2″ to protect it while in your cue case.Features:Seven different bridge positions that enhance your playabilityHigh visibility with optical grade plastic that ensures your natural view through the bridge and gives you the advantage in competitive playEach bridge is hand polished ensuring the best quality control and smooth cueingMaterial: Bridge : Acrylic, Ring: Silicone, Case: NeopreneColors: Bridge: transparent, Ring: Black, Case: Black